Based on the daily maximum air temperature data from 176 stations in India from 1969 to 2013, the climatological distribution of the number of days with high temperature (HT) defined as days with maximum temperature higher than 37◦C during summer season (March–June) are studied. With a focus on the regional variability and long-term trends, the impacts of HT days are examined by dividing the country into six geographical regions (North, West, North-central, East, South-central and South).

State level climate change trends over India during last 60 years have been presented this publication. The publication contains quantification of climate change trends with latest data (1951-2010) in respect of temperatures (Maximum, Minimum and Average), Daily temperature range and rainfall for each state of the country.